Transfer any file to shareable online link

#!/bin/bash
if [ $# -eq 0 ]; then echo -e "No arguments specified. Usage:\necho transfer /tmp/test.md\ncat /tmp/test.md | transfer test.md"
return 1
fi
tmpfile=$( mktemp -t transferXXX )
if tty -s; then basefile=$(basename "$1" | sed -e 's/[^a-zA-Z0-9._-]/-/g')
curl --progress-bar --upload-file "$1" "https://transfer.sh/$basefile" >> $tmpfile
else curl --progress-bar --upload-file "-" "https://transfer.sh/$1" >> $tmpfile
fi
cat $tmpfile
rm -f $tmpfile